Administrators at a hospital are concerned about the possibility of drug abuse b

Question

Administrators at a hospital are concerned about the possibility of drug abuse by people who work there. They decide to check on the extent of the problem by having a random sample of the employees undergo a drug test. Several plans for choosing the sample are proposed. a. Name the sampling strategy in each. (4 marks) i. There are four employee classifications: doctors, medical staff (nurses, technicians, etc.) office staff, and support staff (custodians, maintenance, etc.). Randomly select ten people from each category. ii. Each employee has a 4-digit ID number. Randomly choose 40 numbers. i At the start of each shift, choose every tenth person who arrives for work. iv. Randomly select a department (say, radiology) and test all the people who work in that department: doctors, nurses, technicians, clerks, custodians, etc. Explain why the last plan suggested above, sampling an entire department, might be biased. Be sure to name the kind(s) of bias you describe. (2 marks) b. Name and describe the kind of bias that might be present if the administration decides that instead of subjecting people to random testing they'll just... (4 marks) c. i. Interview employees about possible drug abuse. ii. Ask people to volunteer to be tested.

Explanation / Answer

I) Stratified sampling :  In stratified samplingtechnique, the sample is created out of the random selection of elements from all the strata

ii Random sampling

iii systematic sampling

iv cluster sampling

We are directed to do only the first 4 parts if multiple parts are posted

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